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William Blair & Company Portfolio holdings
AUM
$34.9B
1-Year Est. Return
18.88%
This Fund
S&P 500
This Quarter
Est. Return
+12.61%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$36B
AUM Growth
+$2.85B
(+8.6%)
Cap. Flow
-$222M
Cap. Flow
% of AUM
-0.62%
Top 10 Holdings %
Top 10 Hldgs %
24.91%
Holding
1,911
New
111
Increased
662
Reduced
757
Closed
87
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
GE Vernova
GEV
|
+$116M |
| 2 |
Boeing
BA
|
+$34M |
| 3 |
CWAN
Clearwater Analytics
CWAN
|
+$31.2M |
| 4 |
NVIDIA
NVDA
|
+$27.5M |
| 5 |
Cloudflare
NET
|
+$26.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
XYZ
Block Inc
XYZ
|
+$79.4M |
| 2 |
Zoetis
ZTS
|
+$41.3M |
| 3 |
Accenture
ACN
|
+$40.8M |
| 4 |
iShares Core S&P Mid-Cap ETF
IJH
|
+$40.7M |
| 5 |
UnitedHealth
UNH
|
+$36.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 27.47% |
| 2 | Financials | 13.92% |
| 3 | Industrials | 12.94% |
| 4 | Healthcare | 11.51% |
| 5 | Consumer Discretionary | 7.98% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1226
Charter Communications
CHTR
$18.2B
| $327K | ﹤0.01% |
801
-17
| -2% | -$6.51K |
|
1227
Fidelity MSCI Utilities Index ETF
FUTY
$2.29B
| $327K | ﹤0.01% |
6,222
-264
| -4% | -$13.6K |
|
1228
Bank of America Series L
BAC.PRL
$3.99B
| $325K | ﹤0.01% |
268
| – | – |
|
1229
First Trust Large Cap Value AlphaDEX Fund
FTA
$1.4B
| $324K | ﹤0.01% |
4,127
-6,505
| -61% | -$487K |
|
|
SNV
1230
DELISTED
Synovus
SNV
| $323K | ﹤0.01% |
6,247
+3
| +0% | +$138 |
|
1231
Oil-Dri
ODC
$1.34B
| $323K | ﹤0.01% |
5,480
| – | – |
|
1232
Eve Holding
EVEX
$962M
| $323K | ﹤0.01% |
47,017
| – | – |
|
1233
Listed Funds Trust Roundhill Magnificent Seven ETF
MAGS
$3.87B
| $322K | ﹤0.01% |
5,805
-2,814
| -33% | -$139K |
|
1234
Green Brick Partners
GRBK
$3.14B
| $321K | ﹤0.01% |
5,105
| – | – |
|
1235
First American
FAF
$7.58B
| $321K | ﹤0.01% |
5,222
+20
| +0.4% | +$1.19K |
|
1236
Old Second Bancorp
OSBC
$1.29B
| $320K | ﹤0.01% |
18,020
+21
| +0.1% | +$342 |
|
1237
State Street SPDR S&P Insurance ETF
KIE
$639M
| $318K | ﹤0.01% |
5,329
| – | – |
|
|
DAY
1238
DELISTED
Dayforce
DAY
| $318K | ﹤0.01% |
5,737
-84,912
| -94% | -$4.85M |
|
1239
Ally Financial
ALLY
$13.3B
| $318K | ﹤0.01% |
8,153
-575
| -7% | -$19.9K |
|
1240
First Horizon
FHN
$12.1B
| $317K | ﹤0.01% |
14,961
+322
| +2% | +$6.14K |
|
1241
Vanguard Communication Services ETF
VOX
$5.76B
| $317K | ﹤0.01% |
1,852
-242
| -12% | -$37.2K |
|
1242
Trip.com Group
TCOM
$29.1B
| $317K | ﹤0.01% |
5,398
+205
| +4% | +$12.3K |
|
1243
SM Energy
SM
$6.87B
| $315K | ﹤0.01% |
12,746
+13
| +0.1% | +$315 |
|
1244
Zions Bancorporation
ZION
$10.3B
| $313K | ﹤0.01% |
6,031
-679
| -10% | -$31.9K |
|
1245
Teva Pharmaceuticals
TEVA
$41.2B
| $312K | ﹤0.01% |
18,600
-182
| -1% | -$2.94K |
|
1246
Lincoln National
LNC
$8.81B
| $310K | ﹤0.01% |
8,961
-3,025
| -25% | -$98.9K |
|
1247
ATI
ATI
$31B
| $310K | ﹤0.01% |
+3,587
| New | +$246K |
|
1248
Pentair
PNR
$11B
| $309K | ﹤0.01% |
3,011
+471
| +19% | +$44K |
|
1249
Concrete Pumping Holdings
BBCP
$491M
| $308K | ﹤0.01% |
+50,000
| New | +$317K |
|
1250
Inhibikase Therapeutics
IKT
$388M
| $306K | ﹤0.01% |
156,953
+1,000
| +0.6% | +$1.96K |
|
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William Blair & Company's Q2 2025 Portfolio in Review
As of Q2 2025, William Blair & Company held 1,911 positions worth $36B, up 8.6% from $33.2B the previous quarter. Its ten largest holdings account for 25% of the portfolio.
William Blair & Company's Q2 2025 filing shows 111 new, 662 increased, 757 reduced and 87 closed positions. Its largest new stake was Affirm: 304,959 shares worth $21.1M. The largest sale was Block Inc, an estimated $79.4M.
By sector, the portfolio is most concentrated in Technology at 27% of assets, up from 26% a quarter earlier, followed by Financials and Industrials.
- William Blair & Company's largest Q2 2025 buy was Affirm: 304,959 shares worth $21.1M.
- William Blair & Company added most to GE Vernova in Q2 2025, an estimated $116M increase.
- William Blair & Company's biggest Q2 2025 reduction was Block Inc, cutting an estimated $79.4M.
- William Blair & Company fully exited Discover Financial Services in Q2 2025, selling an estimated $5.21M.
- William Blair & Company's ten largest holdings make up 25% of its $36B portfolio in Q2 2025.
- William Blair & Company opened 111 new positions and closed 87 in Q2 2025.
- William Blair & Company's portfolio value rose 8.6% quarter-over-quarter to $36B.
Based on William Blair & Company's 13F filing for Q2 2025, filed 24 Jul 2025.